wx_push/src/main/java/com/ynxbd/push/helper/StringHelper.java

package com.ynxbd.push.helper;

import org.springframework.util.ObjectUtils;

import java.nio.charset.StandardCharsets;

/**
 * @author 李进才
 * @ClassName StringHelper
 * @Description description
 * @date 2023/1/28 09:41
 */
public class StringHelper {
    /**
     * 数字倒序排列
     *
     * @param num 被排序数字
     */
    public static String numDesc(String num) {
        StringBuilder sb = new StringBuilder();
        if (ObjectUtils.isEmpty(num)) {
            return null;
        }
        for (int i = num.length() - 1; i >= 0; i--) {
            sb.append(num.charAt(i));
        }
        return sb.toString();
    }
    /**
     * BASE64加密
     *
     * @param data 需要加密的字符串
     * @return 加密后的字符串
     */
    public static String encode(String data) {
        return java.util.Base64.getEncoder().encodeToString(data.getBytes(StandardCharsets.UTF_8));
    }

}